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开启臭氧污染防控模式 给汽修喷漆戴“紧箍咒”

2017-08-04 05:04:39   中国青年网

今年以来,我市相继出台大气污染防治“650工程”及“成都治霾十条”,提出综合防治臭氧污染,实施挥发性有机物分类治理。夏季正是臭氧污染“爆发季”,天气越热,臭氧浓度越高。对此,蒲江县陆续开展汽修行业喷漆废气专项整治行动。

专项整治

6家汽车维修企业治理达标

7月底,记者走访位于蒲江工业南路的成都汇腾汽车销售服务有限公司时,在其维修车间看到一处编号为FQ-P80hs27的废气排放口从车间外墙直通房顶,铭牌上列有排放的污染物种类苯、甲苯、二甲苯、非甲烷总烃。而车间内部,则整洁明亮,没有明显的粉尘及气味。随后,记者在与进风口相连接的废气治理设施里,看到数排整齐摆放的活性炭。该公司技术人员表示,有机废气通过活性炭吸附过滤,可以实现达标排放。

据蒲江县环保局污防科科长孙师伟介绍,蒲江的大气环境常年都维持良好状态,负氧离子丰富,但这样的环境也极易受到臭氧前体物的影响,而汽车维修行业喷烤漆业务所产生的挥发性有机物正是臭氧前体物的重要来源。今年初,第三方专业机构对该公司生产过程中涉及挥发性有机物排放的喷漆废气处理工序进行了评估,发现大气污染防治设施运行效果不佳,通过采取清理收集系统、加高排气筒、勤换活性炭吸附介质等手段,目前该公司大气污染物经处理后能做到稳定达标排放。

孙师伟坦言,治理臭氧污染关键是抓好前身也就是挥发性有机物和氮氧化物的控制。为此,蒲江县环保局今年4月份在全市率先出台了《汽修企业环保管理要求》,指导企业及时落实污染防治措施。同时,环保、交运联合开展汽修行业喷漆废气专项整治行动,督促全县涉及喷漆工序的一、二、三类汽车维修企业全面禁止露天喷漆,并对喷漆过程中产生的有机废气实施有效收集、治理,做到达标排放。截至7月底,一、二类汽修企业中12家开展喷漆业务,均设置了喷漆房和有机废气处理装置,9家已完成治理达标任务,3家正在开展监测。

动态管控

已建10个空气自动监测子站

7月20日上午11时,蒲江县环保局副局长杨利萍收到了一条手机短信提醒,内容是A044全兴水厂以及A04B大学生创业园两个点位的PM2.5设备发出预警。

为了全面掌握辖区环境空气质量状况,准确查找污染源头,有针对性地实施大气污染防治精细化管理,同时为下一步新建空气质量自动监测站打下基础,蒲江县委托第三方机构在县城区布设了10个空气质量网格化监测点位,进行风速、风向、PM2.5、PM10等4个参数网格化监测。

据悉,今年3月,蒲江县实地查看确定了10个拟选点位,并完成了10个点位的PM2.5/PM10监测设备的安装和调试工作。4月18日进入第二阶段,将第一阶段的10个点位进行调整,以县城空气自动监测子站为中心,向四周作“米”字形布点,查找污染源。“监测数据通过手机APP和网络平台可以实时查询、统计、分析,同时根据管理需要,设定PM2.5、PM10报警阈值,当污染发生时,即时将报警信息通过手机短信发送到管理人员。”杨利萍说,“5分钟就可以得到一个数据,相当迅速。”

今年3月以来,蒲江县环保局制定了《蒲江县环境空气质量应急强化工作方案》,根据当天空气指数情况对全县统一实施空气质量动态管控。3-6月,蒲江县PM10和PM2.5浓度较2016年同期分别下降了31.9%和24.1%。

成都晚报见习记者 叶飞鸿 摄影报道

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